public override bool Contains(float x, float y)
{
if (_polygonPts == null || _polygonPts.Count < 3)
{
return(false);
}
bool br = OuterRect.Contains(x, y);
//if (br)
//{//再次判断是否在多边形里面
// int count = _polygonPts.Count;
// var pt0 = new PointF(x, y);
// float sumArea = 0f;
// for (int i = 0; i < count - 1; i++)
// {
// var pt1 = GetPt(i);
// var pt2 = GetPt(i + 1);
// sumArea += GetTriangleArea(pt0, pt1, pt2);
// }
// {
// var pt1 = GetPt(0);
// var pt2 = GetPt(count - 1);
// sumArea += GetTriangleArea(pt0, pt1, pt2);
// }
// br = sumArea <= AreaValue();
//}
return(br);
}
internal void ResizeSelectedRect(double scale)
{
var rect = new Rect()
{
X = SelectedRect.X * scale, Y = SelectedRect.Y * scale, Width = SelectedRect.Width * scale, Height = SelectedRect.Height * scale
};
var leftTop = new Point(rect.Left, rect.Top);
var leftBottom = new Point(rect.Left, rect.Bottom);
var rightTop = new Point(rect.Right, rect.Top);
var rightBottom = new Point(rect.Right, rect.Bottom);
if (OuterRect.Contains(leftTop) &&
OuterRect.Contains(leftBottom) &&
OuterRect.Contains(rightTop) &&
OuterRect.Contains(rightBottom) &&
rect.Width >= 2 * MinSelectRegionSize &&
rect.Height >= 2 * MinSelectRegionSize)
{
SelectedRect = rect;
}
}
